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UID:20250916T093906EDT-2971srdv03@132.216.98.100
DTSTAMP:20250916T133906Z
DESCRIPTION:Title: Strongly quasipositive knots are concordant to infinitel
 y many strongly quasipositive knots\n\nAbstract: Knots are smooth embeddin
 gs of the (oriented) circle S^1 into the 3-sphere S^3\, usually studied up
  to an equivalence relation called ambient isotopy. A natural generalizati
 on in dimension 4 of the question whether certain knots are isotopic to th
 e trivial knot is the concept of concordance\, another equivalence relatio
 n on the set of knots.\n	\n	We show that every non-trivial strongly quasipos
 itive knot is (smoothly) concordant to infinitely many pairwise non-isotop
 ic strongly quasipositive knots. In contrast to our result\, it was conjec
 tured by Baker that concordant strongly quasipositive fibered knots are is
 otopic. Our construction uses a satellite operation whose companion is a s
 lice knot with maximal Thurston-Bennequin number -1. In the talk\, we will
  define the relevant terms necessary to understand the theorem in the titl
 e\, and explain the context of this result. If time permits\, we will say 
 a few words about how the construction extends to links.\n\nhttps://uqam.z
 oom.us/j/98999725241\n
DTSTART:20221216T160000Z
DTEND:20221216T170000Z
SUMMARY:Paula Truöl\, ETH Zurich
URL:/mathstat/channels/event/paula-truol-eth-zurich-34
 4266
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